blob: b146ca4e8d2663503df24fe2d1234b4586594691 [file] [log] [blame]
// Copyright (c) 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/third_party/quic/tools/quic_client.h"
#include <dirent.h>
#include <sys/types.h>
#include <memory>
#include "net/third_party/quic/platform/api/quic_epoll.h"
#include "net/third_party/quic/platform/api/quic_string_piece.h"
#include "net/third_party/quic/platform/api/quic_test.h"
#include "net/third_party/quic/platform/api/quic_test_loopback.h"
#include "net/third_party/quic/platform/api/quic_text_utils.h"
#include "net/third_party/quic/test_tools/crypto_test_utils.h"
#include "net/third_party/quic/test_tools/quic_client_peer.h"
namespace quic {
namespace test {
namespace {
const char* kPathToFds = "/proc/self/fd";
QuicString ReadLink(const QuicString& path) {
QuicString result(PATH_MAX, '\0');
ssize_t result_size = readlink(path.c_str(), &result[0], result.size());
CHECK(result_size > 0 && static_cast<size_t>(result_size) < result.size());
result.resize(result_size);
return result;
}
// Counts the number of open sockets for the current process.
size_t NumOpenSocketFDs() {
size_t socket_count = 0;
dirent* file;
std::unique_ptr<DIR, int (*)(DIR*)> fd_directory(opendir(kPathToFds),
closedir);
while ((file = readdir(fd_directory.get())) != nullptr) {
QuicStringPiece name(file->d_name);
if (name == "." || name == "..") {
continue;
}
QuicString fd_path = ReadLink(QuicStrCat(kPathToFds, "/", name));
if (QuicTextUtils::StartsWith(fd_path, "socket:")) {
socket_count++;
}
}
return socket_count;
}
// Creates a new QuicClient and Initializes it. Caller is responsible for
// deletion.
QuicClient* CreateAndInitializeQuicClient(QuicEpollServer* eps, uint16_t port) {
QuicSocketAddress server_address(QuicSocketAddress(TestLoopback(), port));
QuicServerId server_id("hostname", server_address.port(), false);
ParsedQuicVersionVector versions = AllSupportedVersions();
QuicClient* client =
new QuicClient(server_address, server_id, versions, eps,
crypto_test_utils::ProofVerifierForTesting());
EXPECT_TRUE(client->Initialize());
return client;
}
class QuicClientTest : public QuicTest {};
TEST_F(QuicClientTest, DoNotLeakSocketFDs) {
// Make sure that the QuicClient doesn't leak socket FDs. Doing so could cause
// port exhaustion in long running processes which repeatedly create clients.
// Record initial number of FDs, after creation of EpollServer.
QuicEpollServer eps;
size_t number_of_open_fds = NumOpenSocketFDs();
// Create a number of clients, initialize them, and verify this has resulted
// in additional FDs being opened.
const int kNumClients = 50;
for (int i = 0; i < kNumClients; ++i) {
std::unique_ptr<QuicClient> client(
CreateAndInitializeQuicClient(&eps, kTestPort + i));
// Initializing the client will create a new FD.
EXPECT_LT(number_of_open_fds, NumOpenSocketFDs());
}
// The FDs created by the QuicClients should now be closed.
EXPECT_EQ(number_of_open_fds, NumOpenSocketFDs());
}
TEST_F(QuicClientTest, CreateAndCleanUpUDPSockets) {
QuicEpollServer eps;
size_t number_of_open_fds = NumOpenSocketFDs();
std::unique_ptr<QuicClient> client(
CreateAndInitializeQuicClient(&eps, kTestPort));
EXPECT_EQ(number_of_open_fds + 1, NumOpenSocketFDs());
// Create more UDP sockets.
EXPECT_TRUE(QuicClientPeer::CreateUDPSocketAndBind(client.get()));
EXPECT_EQ(number_of_open_fds + 2, NumOpenSocketFDs());
EXPECT_TRUE(QuicClientPeer::CreateUDPSocketAndBind(client.get()));
EXPECT_EQ(number_of_open_fds + 3, NumOpenSocketFDs());
// Clean up UDP sockets.
QuicClientPeer::CleanUpUDPSocket(client.get(), client->GetLatestFD());
EXPECT_EQ(number_of_open_fds + 2, NumOpenSocketFDs());
QuicClientPeer::CleanUpUDPSocket(client.get(), client->GetLatestFD());
EXPECT_EQ(number_of_open_fds + 1, NumOpenSocketFDs());
}
} // namespace
} // namespace test
} // namespace quic